Race Weekend Central

A Statistical Deep Dive in Jimmie Johnson’s 1st IndyCar Street Race

Before Sunday, Jimmie Johnson had never raced on a street circuit. Aiming to learn, Johnson did all of that and more in Sunday’s (April 25) Firestone Grand Prix of St. Petersburg, the second race of the 2021 NTT IndyCar Series season.

The No. 48 Carvana Honda started 23rd and ran as high as 21st following a few pit stops, but unfortunately that’s when things started going sour for the seven-time NASCAR Cup Series champion.

Johnson locked up his brakes going to the final hairpin turn on the circuit, lightly brushing the tire barrier with the left front of the car. Selecting reverse gear might not have been something the two-time Daytona 500 winner had practiced, but Johnson was trying his hardest under constant radio instruction from the pit stand.

“Can you back it out?”

“It won’t go,” Johnson said.

“You’re in first, okay now you’re in reverse.”

“I understand, it’s not going anywhere,” Johnson replied.

Another couple of minutes pass by.

“Emergency mode, and hold the clutch, get it in reverse and let it out real slow.”

“It’s not selecting anything,” Johnson said.

“Shut it off J, it’s getting hot. Just shut it off.”

After getting pointed in the right direction and restarted by the AMR Safety Team, Johnson made it back to the pits, albeit a few laps down.

While Chip Ganassi Racing teammates Scott Dixon and Marcus Ericsson were in the top 10 and Alex Palou was setting the fastest lap, Johnson was still getting used to racing on a street circuit for the first time in his life. Turning in 77 laps in all the practice sessions did help.

Johnson’s fastest lap was 1 minute, 2.7196 seconds, which was about three-hundredths of a second faster than Dalton Kellett’s fastest lap and four-tenths of a second off of Ed Jones’ fastest lap. Jones, by the way, won his first two Indy Lights races in his rookie season in 2015 at St. Petersburg.

See also
Colton Herta Dominates in St. Petersburg; Josef Newgarden Second

So let’s take a bit of a deeper look into Johnson’s laps around the 1.8-mile street course that includes a runway from the Albert Whitted airport as the main straightaway.

Taking the best micro sector times from around the track, Johnson’s optimal lap around St. Petersburg was a 1 minute, 2.2677 seconds. That lap time is only 0.00426 seconds faster than the best lap the Californian was able to put together.

Breaking down the optimal lap even further, Johnson’s best time through the sixth micro sector was 13th best in the field, just 0.1656 seconds slower than the best time through that section of track. The sixth micro sector starts midway between the kick following turn 9 and ends midway between turns 12 and 13. Going a bit further down the micro sector rabbit hole, there is an even smaller micro sector composed of the braking zone to turn 10, the corner itself and then accelerating out of it, and Johnson was the eighth fastest through that part of the track.

Going through the individual stints now, Johnson set his fastest lap of the first stint on the ninth lap going around the track in 1 minute, 3.2165 seconds. Unfortunately, the first stint of the race was marred by Johnson getting stuck in the tire barrier at turn 13 on lap 15.

What’s interesting about that lap is that Johnson was gaining several hundredths of a second in each micro sector on the first half of that lap. In fact, until the exit of turn 9, Johnson was .2419 seconds faster on that lap than his fastest first stint lap of the race.

In the second stint of the race, Johnson broke into the 62 second barrier on his 29th lap and turned his fastest race lap two laps later. In the second stint, Johnson spent almost the entire stint in the 63 second bracket except for a couple of outlier laps in the 64 second bracket and some decent laps in the 62 second bracket that came close but didn’t quite match up to his fastest of the race.

Johnson’s next stint had a slow 73-second lap that could probably be attributed to trying to let leaders through on track. After taking the next lap to clean off his tires, Johnson then ran every lap but one in the 63-second time bracket until his spin on his 68th lap.

After the final caution, Johnson’s lap times were a bit more erratic going all over the 63- to 65-second time brackets. However, Johnson did manage to finish the race with all four wheels still on the car, crossing the line 22nd.

“Unfortunately I made two mistakes on older tires,” Johnson said in a post-race video. “I could feel the car losing some grip and being a little more difficult to drive, but I thought I could stay on top of it and just got behind in (turn) 13 and locked up the fronts. And then I had a really loose car through the high speed stuff and it got away from me in turn 3. Both situations I needed to put a new wing on the front, was able to get back out and get going.

“There certainly were some bright spots, the pace was there, really putting together the run from old tires to old tires is something I need to work on, but I had a blast here at my first street race. It is more physical and more difficult than these drivers ever make it look so a huge credit to all of them and how easy they make this look.”

On a slightly humorous note, Johnson does have one bright spot to his day in St. Petersburg. Going from the start/finish line on pit road to the pit out line, Johnson had the fastest time on that section of pit road by 0.0019 seconds over James Hinchcliffe. Sure, everyone’s on the pit limiter, but Johnson was the best at it.

About the author


Christopher DeHarde has covered IndyCar racing and the Road to Indy for various outlets since 2014. In addition to open wheel racing, DeHarde has also covered IMSA and various short track racing events around Indiana. Originally from New Orleans, DeHarde moved to the Indianapolis area in 2017 to further pursue a career as a motorsports writer.

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